It's a world similar to ours, but where the darkness of the night is indeed riddled with monsters. Reika Ayakaze, an apprentice "hunter" who strikes down the monsters that threaten the people of the world, one day, she learns that an unfamiliar pattern is appearing on her best friend, Mana Tomita.

It's a world similar to ours, but where the darkness of the night is indeed riddled with monsters.

Reika Ayakaze, an apprentice "hunter" who strikes down the monsters that threaten the people of the world, one day, she learns that an unfamiliar pattern is appearing on her best friend, Mana Tomita.

Reika and Mana start to investigate the pattern.

However, what awaits them are evil who are after Aina and countless monsters attracted by the pattern......

With the cursed demon sword "Rin" that has been passed down in the Ayakaze family, Reika's battle begins.